Around the globe, Каллен (Cullen 
, Kallen 
, Каллен 
) is quite a common principally masculine, but very seldom girly forename. The first name Каллен is habitual in the United States, where it is quite a rare masculine name, Ireland, where it is a rare male name, and New Zealand. In absolute terms, it is commonest in the United States, the Democratic Republic of the Congo, and India. More prevalently, Каллен is the last name as well as the forename.
Каллен is also a name for the fictitious and mythical characters: Kallen Stadtfeld , the fictional character from Code Geass; Cullen Bloodstone , the comics character and Cullen Francis , the fictional character appearing in the movie « Une histoire à faire peur », The Good Lie.